Shingle-abrading machine



June 28, 1927.

1,633,563 c. M. ABBOTT SHINGLE ABRADING MACHINE Filed oct. 16, 1925 s Smets-sheet v1 h5 lorlygy unv 28 192 f J e 7 c. M. ABBOTT SHINGLE ABRADING MACHINE 5 .Sheets-Shut 2 Filed Oc 1'6 n hlveuor 1,633,563 June 28,1927. c. M ABBOTT SHINGLE ABRADING NACHI NE Filed oct. 16. 1925 5 sheets-Sheet 3 v bvalaar j UlzarllMhbalZ orlggy June' 28" 1927 c. M. ABBOTT SHINGLE ABRADING MACHINE Filed oct. 16. 1925 5 sheets-sheet 4 Invenvr Jana .28, 1927.

C. M. ABBOTT SHINGLE ABRADING MACHINE Filed oct.. 16. -1925 5 sheets-Sheet 5 M i LS1 W5 sam p; W.

Patented June 28, 1927.

UNITED STATES CHARLES rr. ABBOTT, or WATERTOWN, MASSACHUSETTS, AssrGNoa To s/AMUEL cABozr,

PATENT OFFICE.

INC., OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACIUSETTS.

SHINGLE-ABRADING MACHINE.

Application led October 16, 1925. Serial No. 62,929.

In this application I present an invention relating to mechanisms for performing c ertain operations, notably for surfacing shingles or like material.

such we may take as a specific example a machine for the production of an imitation rift shingle.

an historic setting in the lumber industry and has occupied a unique position as beingV 1,0 inldemand and yet commercially unavailab e. v

Without discussing the Well known problem of the article, I deliberately select it as an example because it affords an extreme l5 and specific test of my invention, although it is capable of infinite adaptation to other fields of work.

In the illustrative field selected, it is to be noted that the result to be secured is an abraded shingle having a scored 'surface mechanically produced in a certain definite relation to a previous standard system of sawing by which it transforms the original stereotyped product with a highly specialized roduct favorably comparable with the high y expensive commercially unavailable shingles known as hand split shakes.

As an example of a'machine capable of the commercial production of such shingles, l have shown in the accompanying drawings an embodiment well adapted to commercial production so-as to be available in any lumber yard and thus economically adapted to supply such shingles promptly on order.

Without limitation or limiting detail, I have set forth in the accompanying drawings a machine Well adapted to the commercial production of shingles and capable ot' performing the method of my invention. Throughout the specification and drawings like reference characters are employed to indicate corresponding parts, and in these drawings l.

Fig. 1 is a side elevation of such a machine.

Fig. 2 isa plan view thereof.

Fig. 3 is an end elevation at the abrading end'ot` the machine.

Figs.4 4 and 5 are somewhat diagrammatic side elevations showing feeding and abrading steps, respectively.

Interpreted asl The rift shingle or shake hasv Fig. 6 is an enlarged detail of the abrading step at its initial step.

Fig. 7 is a further progression.

Fig. 8 is a nal step.

Fig. 9 is a plan viewillustrative of the work accomplished.

\ Fig. 10 alongitudinal section thereof, and Fig. 11 is a transverse section of the same.

In the embodiment shown I provide a base comprising supports 1 and l1,v with longitudinal members 2 spaced therebetween. Pivoted at one end in the su ports 1 is a frame 40 which carries an en less conveyor 3. This conveyor 3 is of a link belt type havingtransverse cleats 31 for carrying t e shingles S which are fed to it so asto meet the rotary brush 30, tip or point or thin part first.

The conveyor 3 runs on a pair of sprockets 4, 5 jonrnaled at opposite ends of the frame 40.

The sprockets 5 are driven by a chain 6 driven by a sprocket 7 on a countershaft y8 by a gear 9 meshing with a gear 1() on a shaft 11 which in turn is driven by a gear 12. The. `gear 12 is preferably driven by a pinion 13 carried on a power driven shaft. The abrading member 30 is' preferably a rotary wire brush of suitable ystiffness to remove the free cellular body of the wood in accordance with my previous Patent No. 1,610,233, granted December 14, 1926.

The conveyor member 3 is made up of a link belt comprising a pair of lateral chains 32 having roller members 14 adapted to bear on the top rail 15 of the longitudinal frame 40 of the machine. This frame as heretofore explained consists of the members 4 0 on which they upper rails 15 are supported.

(The transverse cleat members 3l support. the shingles S in transverse rows. At suitable intervals pushing cleats 16 are provided for bearing a ainst the butt of the shingles S so as to al'ord a positive feed for the shingles to the abrading brush 30. Adjacent the brush 30 is a clamping device comprisin a pair of rollers 17 supported on crosse arms 18 having levers 18l connected by a spring 19 which' acts'to hold the rollers 17 down against the shingles on the way.

The longitudinal frame members 40 pivoted at 20 are raised by a cam 21 coacting with a roller 22 on the frame 40. The cam 21 is so proportioned and timed that its liftinor portion vv211 begins to` bear against the rocllcr 22 when the shingles of any given row are coming under the abrading biush 30.

As indicated diagrammatically in Fig. 7 the brush 3() will have been brought firmly into contact with the shingle surface to give In the raising movement of the framel 40 the row of shingles S beneath the brush is' brought against the yielding clamp rollers 17 so that the whole row of shingles is firmly but yieldingly held while being pushed along by the pushing cleats 16.

The shingles may be rapidly fed to the conveyor and are dropped at the opposite end in rows so that they can be conveniently rebundled for shipment.

The brush 30 which is 'ournaled in bearings 31 slidably mounted in the uprights 11 is adjustable by means of screws 32 turned by beveled pinions 33 driven by meshing pinions 34 on a shaft 35 having a squared end 36 for a crank control.

The machine is simple and inexpensive and within the reach of the ordinary dealer in shingles and is capable of giving very rapid roduction. Where the shingles are to be stained the conveyor may be arranged to take the shingles from the delivery end of the machine and feed them to the staining machine.

Various modifications in the structure of the conveyor and the'character of the drives may obviously be made without departing from the spirit of my invention if within the limits of the appended claims.

What I therefore claim and desire to secure by Letters Patent is:

1. A machine for abrasively removing a portion of the softer 'layers of a sawed shingle. while leaving the harder intermediate layers exposed in relief, comprising a rotary abrading device, a conve 0r for successively advancing a plurality o shingles past said abrading device while maintaining one surfaceof the shingle substantiall parallel to the line of shingle travel, an intermittently moving said conveyor and abrading device relative to each other while a shingle is disposed therebetween whereby to regulate the de th of cut.

2. A machine or abrasively removing a portion of the softer layers of a'sawed shingle while leaving the harder intermediate means for layers exposed in relief, comprising a rotary abrading device, a conve or for successively advancing a plurality o shingles past said abrading device while maintaining one surface of the shin le substantially parallel to the line of shing e travel, a spring-tensioned shingle clamp mounted adJacent to said abrading device and disposed to hold the shingles towards said conveyor as they pass said abrading device, and means for intermittently moving said conveyor and abrading 'device relative to each other while a shingle is dis osed therebetween whereby to regulate the epth of cut.

3- A machine for abrasively removing v'a portion ofthe softer layers of a sawed shinle while leaving the harder intermediate ayers exposed in relief, comprising a rotary abradingdevice, a conveyor for successivel advancing a plurality of shingles beneah said abrading device while maintaining one surface of the shingle substantially parallel to the line of shingle travel, and means for intermittently lifting said conveyor towards said abradingfdevice while a shingle is disposed therebetween whereby to regulate the depth of cut."

4. A machine for abrasively removing a portion of the softer layers of a sawed shin'- gle while leaving the harder intermediate layers exposed in relief, comprisin a 'r0.- tary abrading device, a conveyor or successively advancing a plurality of shingles beneath said abrading device while maintaining one surface of the shingle substantially parallel to the line of shingle travel. a spring-tensioned shingle clamp mounted adjacent to said abrading device4 and disposed to maintain overhead bearing upon the shingles as they pass under said abrading device, and means for intermittently lifting said conveyor towards said abrading device while ashingle is disposed therebetween whereby to regulate the depth of cut. l 5. A machine for abrasively removing a portion of the softer layers of a sawed shingle while leaving the harder intermediate layers exposed in relief, comprising a rotary abradin device, a pivoted frame, a conveyor carried y said frame for successively advancing a plurality of shingles beneath said abrading device While maintaining one surface of the shingle substantially parallel to the line of shingle travel, and a lifting camA for intermittently lifting said frame and with it the donveyor towards said abrading device while a shingle is disposed therebetween whereby to regulate the depth 'of cut.

6. A machine for abrasively removing a portion -of the softer layers of a sawed shinf gle while leaving the harder intermediate A layers exposed in relief, comprising a rotary abradinr device, a pivoted frame, a conveyor carried L by said frame for successively advancing a plurality of shingles beneath said l abrading device whiie maintaining one surface of the shingle substantially parallel to the line of shingle travel, a spring-tensioned shingle clamp mounted adjacent to said abrading device and disposed to maintain overhead bearing upon the shingles as they pass under said abrading device, and a lifting cam for intermittently lifting said frame and with it the conveyor towards said abrading device while a shingle is disposed there- 10 between whereby to regulate the depth of cut.

. In testimony whereof I aix my signature.

CHARLES M. ABBOTT. 

